Eruption types - PowerPoint PPT Presentation

18.1 Notes: Hawaiian – Type Volcano

18.1 Notes: Hawaiian – Type Volcano. Describe: Weakest eruption; lava travels very slowly &amp; far. Fissure Eruption. Describe: When lava is released through surface fissures (cracks) instead of out of the central vent of a volcano. . Low-Viscosity Magma. Describe:

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How to Use ESP, cont’d.

Eruption Source Parameters: Improved input to volcanic-ash dispersion models. (Marianne Guffanti, USGS, 4 June 2008).

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Eruption Types

Eruption Types. Explosive- Contains large amounts of silica, water and gases which makes composite volcanoes extremely explosive and loud. Semi-explosive- Contains large amounts of gas but aren’t as explosive as composite volcanoes but more explosive than shield volcanoes.

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